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Official data from INPI

PROCESSO E DISPOSITIVO PARA PRODUZIR FILTROS DE FUMACA DE TABACO E PRODUTO RESULTANTE

ConcedidaInvention Patent

Application data

Number

PI7902479

Type

Invention Patent

Filing

04/21/1978

Publication

-

Progress at the INPI

  1. Filing04/21/78
  2. Publication
  3. Examination11/10/81
  4. Allowance03/13/84
  5. Grant09/25/84
  6. Expired06/21/94

The letters patent expired on 06/21/1994: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/25/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CIGARETTE COMPONENTS LTD

Inventors

B. S. (pessoa física)

H. E. (pessoa física)

T. B. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/25/1984

RPI 727

Notificação para pagamento de retribuição

#13.1

07/03/1984

RPI 715

Deferimento

#9.1

03/13/1984

RPI 699

Exigência - art. 36 da LPI

#6.1

10/18/1983

RPI 678

6.2

02/08/1983

RPI 642

Solicitação de exame técnico

#4.1

11/10/1981

RPI 577

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

Cessão de direito de exploração

#22.1

11/12/1991

RPI 1093

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